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Next: <a href="Plugins-building.html" accesskey="n" rel="next">Building GCC plugins</a>, Previous: <a href="Plugins-gate.html" accesskey="p" rel="prev">Controlling which passes are being run</a>, Up: <a href="Plugins.html" accesskey="u" rel="up">Plugins</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html" title="Index" rel="index">Index</a>]</p>
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<h3 class="section" id="Keeping-track-of-available-passes"><span>24.9 Keeping track of available passes<a class="copiable-link" href="#Keeping-track-of-available-passes"> &para;</a></span></h3>

<p>When your plugin is loaded, you can inspect the various
pass lists to determine what passes are available.  However, other
plugins might add new passes.  Also, future changes to GCC might cause
generic passes to be added after plugin loading.
When a pass is first added to one of the pass lists, the event
<code class="code">PLUGIN_NEW_PASS</code> is invoked, with the callback parameter
<code class="code">gcc_data</code> pointing to the new pass.
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